EP2974932A1 - Véhicule terrestre commandé de manière variable - Google Patents

Véhicule terrestre commandé de manière variable Download PDF

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Publication number
EP2974932A1
EP2974932A1 EP15165349.0A EP15165349A EP2974932A1 EP 2974932 A1 EP2974932 A1 EP 2974932A1 EP 15165349 A EP15165349 A EP 15165349A EP 2974932 A1 EP2974932 A1 EP 2974932A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
command
inceptor
operator
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15165349.0A
Other languages
German (de)
English (en)
Inventor
Richard Donovan Jones
David A Whelan
Lynne Wenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boeing Co
Original Assignee
Boeing Co
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Filing date
Publication date
Application filed by Boeing Co filed Critical Boeing Co
Publication of EP2974932A1 publication Critical patent/EP2974932A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/10—Path keeping
    • B60W30/12—Lane keeping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
    • B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/14—Adaptive cruise control
    • B60W30/143—Speed control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/087—Interaction between the driver and the control system where the control system corrects or modifies a request from the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/10—Interpretation of driver requests or demands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W50/16—Tactile feedback to the driver, e.g. vibration or force feedback to the driver on the steering wheel or the accelerator pedal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/025—Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/025—Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation
    • B62D15/0265—Automatic obstacle avoidance by steering
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0055—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements
    • G05D1/0061—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements for transition from automatic pilot to manual pilot and vice versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/043—Identity of occupants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/14—Clutch pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/18—Steering angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/30—Driving style

Definitions

  • the present disclosure relates to vehicle control, and more specifically, to autonomous vehicle control in the absence of safe operating commands from an operator.
  • Embodiments presented herein can provide for seamless integration between automated control of a vehicle and operator control of the vehicle.
  • operator can control the vehicle through one or more "drive by wire" controls.
  • An automated system can monitor the operator's inputs to the system via control inceptors and determine whether the inputs are within a safe range of inputs based on vehicle dynamics, the vehicle environment, etc. In instances where the operators inputs are not safe, the system can modify the control inputs such that they follow safe range. In various other instances, the automated system can be controlling operation of the vehicle (e.g., following a predefined path or route). The automated system can apply automated commands to various vehicle controls to modify the vehicles direction of travel and/or speed of travel.
  • the automated system can determine whether the operators input results in a safe command to the various vehicle controls. If the operators inputs results in a safe command, then the automated system can replace the automated commands with the user - input commands. However, if the operator's inputs result in an unsafe, the automated system can prohibit modification of the automated commands.
  • a method for controlling a vehicle can include generating at least one autonomous operation of command for directing a vehicle along a predefined path.
  • the method can monitor operation of at least one control input for the vehicle, wherein an operator can provide control commands for the vehicle through the at least one control input. Operation of the control inputs can results in a modified command different from the at least one autonomous command.
  • the method replaces the autonomous command with the modified command.
  • the method prevents modification of the autonomous command.
  • a vehicle can include a control input, a sensor configured to detect an aspect of an environment of the vehicle, and a vehicle control.
  • the vehicle control can be configured to modify at least one of a travel speed and direction of travel of the vehicle in response to an input to the control input.
  • the vehicle can also include a controller configured to determine a safe range of operation of the control input that corresponds to a safe range of operation of the vehicle control. The determined safe range of operation of the control input can be based on the detected aspect of the environment from the sensor.
  • the controller can monitor operation of the control input by an operator of the vehicle. Upon determining that the vehicle operator has operated the control input outside of the determined safe range, the controller can automatically modify operation of the vehicle control to an operation that is within the determined safe range.
  • a controller can include an input configured to receive a plurality of control input signals from vehicle inceptors and an output configured to transmit a plurality of command signals to a plurality of vehicle controls.
  • the controller can include computer logic configured to transform the plurality of control input signals into a plurality of command signals. Upon determining that the plurality of control inputs signals result in an unsafe command to the vehicle controls, the computer logic can modify the plurality of command signals to be safe command signals.
  • a vehicle 100 can include various control inputs 102 (interchangeably referred to herein as inceptors, vehicle inceptors, or control inceptors) that an operator can use to affect travel of the vehicle 100.
  • a car can include a steering wheel 104, a throttle pedal 106, and a brake pedal 108.
  • the control inceptors can be "drive by wire,” meaning the control inceptors are not mechanically connected to the controls. Rather, the control inceptors 102 communicate signals that are read by controllers, and the controllers send signals that cause operation of the controls. Referring to FIG.
  • the steering wheel 104 which is an example of a control inceptor, can be in data communication with a steering controller 122.
  • the steering controller 122 can translate movement of the steering wheel 104 into steering commands and transmits the steering commands to a steering actuator 136 (e.g. a motor that drives a rack and pinion steering arrangement).
  • a steering actuator 136 e.g. a motor that drives a rack and pinion steering arrangement.
  • the throttle pedal 106 and/or brake pedal 108 which are other examples of control inceptors, can be connected to a speed controller 124.
  • the speed controller 124 can translate positions of the throttle pedal 106 and brake pedal 108 into vehicle speed commands and can transmit the vehicle speed commands to a throttle actuator 134 (e.g., a linear actuator driven throttle body) and a brake actuator 132 (e.g., an actuator driven brake master cylinder), respectively.
  • a throttle actuator 134 e.g., a linear actuator driven throttle body
  • a brake actuator 132 e.g., an actuator driven brake master cylinder
  • the control inceptors 102 can include feedback motors 110, 112, and 114 that provide feedback to the operator through the control inceptors.
  • the steering wheel 104 can be connected to a feedback motor 110 that is capable of turning the steering wheel 104 and/or that is capable of resisting turning of the steering wheel 104.
  • the steering controller 122 can send control signals to the feedback motor 110 as the vehicle drives along.
  • the steering controller 122 can send control signals to the feedback motor 110 that approximates and/or simulates a steering weight and effects of the environment on the steering mechanism. For example, ruts in the road and/or wind may turn the vehicle off of its intended path, resulting in the steering wheels of the vehicle being turned.
  • a feedback motor 112 for the throttle pedal 106 in the feedback motor 114 for the brake pedal 108 can also provide various feedback.
  • feedback motor 112 can receive signals from the speed controller 124 to provide varying degrees of resistance to movement of the throttle pedal 106 based on position of the throttle pedal 106. For example, the feedback motor 112 can provide more resistance the further the throttle pedal 106 is depressed.
  • the speed controller 124 can actuate the feedback motor 112 to move the throttle pedal 106 to a position corresponding to the retarded position of the throttle pedal 106.
  • the feedback motor 114 can receive signals from the speed controller 124 to provide varying degrees of resistance to movement of the brake pedal 108 based on position of the brake pedal 108. For example, the feedback motor 114 can provide more resistance the further the brake pedal 108 is depressed.
  • the speed controller 124 can command the feedback motor 114 to move the brake pedal 108 in a manner commensurate with such pulsing.
  • control inceptors 102 can be located on or within the vehicle.
  • the vehicle 100 can include a passenger compartment with a driver's seat, wherein the steering wheel 104, throttle pedal 106, and brake pedal 108 can be arranged in a typical fashion for a car.
  • the control inceptors 102 can be located remotely from the vehicle 100.
  • the vehicle may be a drone vehicle that an operator can operate remotely.
  • the vehicle 100 can also include a vehicle automation module 140.
  • the vehicle automation module 140 can include a processor 142 and a memory 144.
  • the vehicle automation module 140 can also include a vehicle dynamics module 146 and an environmental threat module 148.
  • the vehicle dynamics module 146 can monitor the current speed, rates of rotation, and control inputs to inceptors (interchangeably referred to herein as inceptor inputs or control inceptor inputs) of the vehicle 100 to determine how close the vehicle is to the limits of control.
  • the environmental threat module 148 can receive various inputs related to the surroundings of the vehicle 100 and determine threats to safe operation of the vehicle 100.
  • the processor 142 can receive the determinations from the vehicle dynamics module 146 and the environmental threat module 148 to determine whether control inceptor inputs being made by an operator to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 result in safe operation of the vehicle. Upon determining that the operator's control inceptor inputs do not result in safe operation of the vehicle 100, then the processor 142 can send commands to the steering controller 122 and/or the speed controller 124 that override the operator's control inceptor inputs. This steering controller 122 and the speed controller 124 can send to the vehicle actuators 130, the override commands from the processor 142, in place of commands resulting from operator inputs to the vehicle controls 104, 106, and 108, resulting in safe operation of the vehicle.
  • the vehicle dynamics module 146 can receive inputs from the steering wheel 104 (e.g., a rotational position of the steering wheel 104), the throttle pedal 106 (e.g., a position of the throttle pedal 106), and the brake pedal 108 (e.g., a position of the brake pedal 108).
  • the vehicle dynamics module 146 can also receive vehicle speed information from one or more vehicle speed sensors 150 (e.g., the vehicles speedometer and/or a GPS receiver). Additionally, the vehicle can receive information about the vehicle acceleration from one or more acceleration sensors.
  • a first acceleration sensor can provide a straight-line acceleration and/or deceleration of the vehicle (i.e., how hard he asked vehicle is accelerating or braking).
  • a second sensor can provide a lateral acceleration of the vehicle (i.e., how hard the vehicle is turning).
  • a third sensor can provide a yaw acceleration of the vehicle (i.e., detecting whether the vehicle is skidding).
  • the vehicle dynamics module 146 can analyze the various received data to determine whether the received inputs to the steering wheel 104, throttle pedal 106, and brake pedal 108 are likely to result in loss of vehicle control. For example, if an operator attempts to turn the steering wheel 104 too much at too high a high speed, then the vehicle may skid.
  • the vehicle dynamics module 146 can provide to the processor 142, a range of control inceptor inputs to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 that likely will not result in loss of vehicle control.
  • the environmental threat module 148 can receive inputs from various systems and/or sensors on board the vehicle to identify nearby threats to safe operation of the vehicle 100.
  • various embodiments of the environmental threat module 148 can receive position information from a location detection sensor and/or system 154 (e.g., a GPS receiver, an inertial guidance system, and/or a dead reckoning system).
  • Various embodiments of the environmental threat module 148 can also receive inputs from one or more vision sensors 156 (e.g., visible light and/or infrared cameras) that provide views of the world surrounding the vehicle.
  • Various embodiments of the environmental threat module 148 can also receive information from one or more radar systems on the vehicle 100 that can detect obstructions in front of, behind, and/or to the sides of the vehicle 100.
  • the environmental threat module 148 can also receive information from a wireless communication module 160 (e.g. Wi-Fi and/or Bluetooth communications) that can communicate with other vehicles on the road, for example.
  • the environmental threat module 148 can analyze the various received data and/or information to identify travel path (e.g., edges of a road and/or lane and boundaries of intersections), objects (e.g., cars, pedestrians, debris), and/or barriers (e.g., K rails, traffic cones, etc .) that may intrude on the vehicle's path of travel.
  • travel path e.g., edges of a road and/or lane and boundaries of intersections
  • objects e.g., cars, pedestrians, debris
  • barriers e.g., K rails, traffic cones, etc .
  • the environmental threat module 148 can provide to the processor 142, a range of control inceptor inputs to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 that will likely avoid the identified objects and/or barriers and/or maintain the vehicle 100 on the identified travel path.
  • the vehicle automation module 140 can also include a memory unit 144 in communication with the processor 142.
  • the vehicle dynamics module 146 and/or the environmental threat module 148 can also be in communication with the memory unit 144.
  • the memory unit 144 can store one or more programs used by the processor 142, the vehicle dynamics module 146, and/or the environmental threat module 148.
  • the memory unit 144 can also store a map of roads and/or travel routes for the vehicle, for example.
  • the memory unit 144 can also store operator profiles. In various embodiments, the operator profiles can include an operator skill level.
  • the skill level can be used by the processor 142 and/or the vehicle dynamics module 146 to determine a safe range of control inceptor inputs to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 for the skill level.
  • the range of control inceptor inputs determined to be safe for a new driver with little experience e.g., a 16-year-old who just received his driver's license
  • the range of control inceptor inputs determined to be safe for an experienced driver e.g., a 40-year-old with 24 years of driving experience.
  • a 16-year-old driver may not be capable of handling any vehicle skids.
  • the safe range of control inputs for the 16-year-old can be within a range that will not cause any skid.
  • a 40-year-old driver may be capable of correcting and/or recovering from a minor skid.
  • the safe range of control inceptor inputs for the 40-year-old can be within a larger range than the 16-year-old, wherein the larger range of control inceptor inputs may allow the vehicle to skid at the outer limits of the range.
  • the processor 142 can determine a skill level of the operator in many different ways.
  • a vehicle 100 may be provided with multiple different keys, wherein each key corresponds to a predetermined skill level.
  • each key can include a microchip, RFID tag, etc. that can communicate with the processor 142 or another control module of the vehicle.
  • the processor 142 and/or the vehicle control module can identify the particular key based on the communications with the microchip, RFID tag, etc.
  • a 16-year-old new driver may be provided with a first vehicle key that corresponds to a small safe range of control inceptor inputs.
  • a 40-year-old experienced driver may be provided with a second vehicle key that corresponds to a larger safe range of control inceptor inputs.
  • the vehicle 100 may recognize different drivers and use machine learning techniques to determine a skill level for each recognized driver.
  • the vehicle 100 may include a camera in the vehicle cockpit that can capture an image of the operator's face such that the processor 142 can use facial recognition software to recognize the driver.
  • the processor 142 can assign a base line skill level to a newly recognized driver.
  • the processor 142 can then monitor control inceptor inputs to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 by the driver at the limits of the safe range of control inceptor inputs associated with the base line skill level.
  • the processor 142 can incrementally increase the skill level for the newly recognized driver, thereby increasing the safe range of control inceptor inputs for the driver.
  • the safe range of control inceptor inputs associated with the baseline skill level may allow for the vehicle 100 to enter a small skid at the limits of the range. If the driver provides correct control inceptor inputs to correct the small skid (e.g. steers into the skid), then the processor 142 can incrementally increase the driver's skill level and thereby provide an incrementally larger range of control inceptor inputs.
  • FIG. 2A illustrates a method 200 for a primarily operator-controlled mode.
  • the method includes detecting operation of vehicle inceptors by the operator.
  • the processor 142 can detect operation of the steering wheel 104, the throttle pedal 106, and the brake pedal 108 by a vehicle operator (via the vehicle dynamics module 146).
  • the method 200 includes determining whether the inceptor inputs results in safe operation of the vehicle.
  • the processor 142 can determine whether current inceptor inputs fall within a safe range of control inceptor inputs provided by the vehicle dynamics module 146 and/or the environmental threat module 148. If the inceptor inputs result in safe operation, then, in block 206, the method 200 includes actuating vehicle controls to perform the operator commanded vehicle control communicated through the inceptor inputs. Returning to block 204, if the inceptor inputs do not result in safe operation, then, in block 208, the method 200 includes modifying the operator commands to perform safe vehicle control. After block 206 or block 208, the method 200 returns to block 202.
  • FIG. 2B illustrates a method 210 for a primarily autonomous operation mode.
  • the method 210 includes generating at least one autonomous operation command for the vehicle.
  • the vehicle may be autonomously following a predetermined route to a destination, and the processor 142 may be issuing commands to the steering controller 122 and/or the speed controller 124 to follow the routes, obey traffic signs and lights, and/or avoid other vehicles and/or pedestrians.
  • the method includes determining whether a vehicle operator has provided a control inceptor input that modifies autonomous operation commands.
  • the vehicle operator may turn the steering wheel 104, depress the throttle pedal 106, and/or depress the brake pedal 108 in a manner that results in commands being sent to the steering controller 122 and/or the speed controller 124 that differ from autonomous commands being sent by the processor 142. If an operator provided inceptor input does not modify the autonomous operation command, then the method 210 returns to block 212. However, if an operator provided inceptor input modifies the autonomous operation command, then the method 210 moves to block 216. At block 216, the method 210 includes determining whether the modified command that results from the operator provided inceptor inputs is safe (as discussed above). If the modified command is not safe, then the method 210 returns to block 212. If the modified command is safe, then the method 210 includes replacing the autonomous operation command with the modified command at block 218. After block 218, the method 210 returns to block 214 to again monitor whether the operator is providing an inceptor input that modifies autonomous operation command.
  • FIGS. 3, 4 , and 5A-5B describe exemplary scenarios that illustrate operation of a vehicle according to various embodiments.
  • FIG. 3 illustrates a scenario in which a subject vehicle 302 is driving along a road 300 in a lane 306 around a gentle right-hand bend 312. Another vehicle 304 is driving in the opposite direction in a second lane 308.
  • a map stored in the memory 144 can include the road 300 along with the gentle curve 312 and a sharper curve 314 head.
  • Vision sensors 156 in the subject vehicle 302 e.g. cameras
  • the vision sensors 156 may also detect the oncoming vehicle 304 and the nearby gentle curve 312 of the road.
  • the vision sensors 156 may not be able to see the sharper curve 314 in the road 300 ahead.
  • the environmental threat module 148 can incorporate the mapped data and the data from the vision sensors 156 to determine inputs to the steering wheel 104, the throttle pedal 106, and the brake pedal 108 of the subject vehicle 302 that maintain the subject vehicle 302 in its lane 306.
  • the steering wheel 104 may need to be turned clockwise by a small degree to stay between the center lane line 310 and the edge line 316.
  • the brake pedal 108 may need to be depressed to slow the vehicle and the steering wheel 104 may need to be turned further to the right to stay in the lane 306.
  • the above described inputs to the steering wheel 104 and the brake pedal 108 can be performed automatically by the processor 142.
  • the processor 142 and the steering controller 122 can send command signals to the feedback motor 110 of the steering wheel 104 to indicate to the vehicle operator the steering inputs being sent to the steering actuator 136 by the processor.
  • the processor 142 and the speed controller 124 can send command signals to the feedback motors 112 and 114 of the throttle pedal 106 and brake pedal 108, respectively, to communicate to the vehicle operator the inputs being sent to the brake actuator 132 and throttle actuator 134 by the processor.
  • the vehicle operator may turn the steering wheel 104 clockwise as the subject vehicle 302 approaches the oncoming vehicle 304 to shift the subject vehicle 302 toward the right edge line 316 of the road 300 (to provide additional spacing from the oncoming car 304), for example.
  • the processor 142 is providing the autonomous commands to the steering controller 122 and the speed controller 124 to steer the vehicle (via the steering actuator 136) and control the speed of the vehicle (via the brake actuator 132 and the throttle actuator 134).
  • the processor 142 can determine that the operator has provided inceptor inputs that modify the autonomous operation commands. In this example, the operator has turned the steering wheel 104 further to a clockwise direction than the autonomous command would turn the steering wheel 104.
  • the processor 142 can determine whether the operator provided inceptor input is safe. In this instance, if there is space between the subject vehicle 302 and the edge line 316 of the road 300, then the environmental threat module 148 may indicate that an additional amount of clockwise turning of the steering wheel 104 is safe. As a result, in block 218, the processor 142 can replace the autonomous operation command with the modified command consistent with the inceptor inputs by the operator. If the vehicle subsequently drives onto the edge line 316, then the environmental threat module 148 may indicate that the current amount of clockwise turning of the steering wheel 104 is not safe and indicate to the processor 142 a smaller amount of clockwise turning that is safe (i.e., an amount that will keep the vehicle from crossing the edge line 316). As a result, the processor 142 can stop substituting the modified command for the autonomous operation command.
  • the operator of the subject vehicle 302 can be steering the vehicle 302 along the gentle curve 312 in the road 300 by providing inceptor inputs to the steering wheel 104.
  • the processor 142 can monitor the inceptor inputs to the steering wheel 104.
  • the processor 142 can determine whether the inceptor inputs to the steering wheel 104 are safe.
  • the environmental threat module 148 can determine a safe range of steering inputs that maintains the vehicle 302 in the lane 306 between the center lane line 310 and the edge line 316.
  • a first limit of the safe range can be a minimum amount of steering actuation by the steering actuator 136 that prevents the vehicle 302 from crossing over the center lane line 310.
  • a second limit of the safe range can be a maximum amount of steering actuation by the steering actuator 136 that prevents the vehicle 302 from crossing over the edge line 316.
  • the processor 142 can monitor inceptor inputs from the steering wheel 104 to the steering controller 122 that result in the steering actuator providing steering actuations that fall within the safe range determined by the environmental threat module 148.
  • the processor 142 can modify and/or replace the operator's inceptor inputs to the steering controller 122 (via the steering wheel 104) with inceptor inputs that result in the steering actuator 136 providing steering actuations within the determined safe range.
  • the processor 142 can also send command signals to the feedback motor 110 of the steering wheel 104 to provide an indication to the operator of the modified and/or replaced inceptor inputs.
  • the processor allows the operator's inceptor inputs via the steering wheel to be passed from the steering controller 122 to the steering actuator 136.
  • FIG. 4 illustrates a scenario in which a subject vehicle 404 is driving on a road 406 toward an intersection 402 of a road network 400, and another vehicle 416 is driving toward the intersection 402 on a perpendicular road 408.
  • a map stored in the memory unit 144 can include the road network 400 as well as the intersection 402.
  • the memory unit 144 may also store a current vehicle route that includes a right hand turn 414 at the intersection 402.
  • Vision sensors 156 in the subject car 404 may detect the center lane line 422 and the edge line 424 of the road 406.
  • the vision sensors 156 may also detect the upcoming intersection 402, as well as any traffic regulating indicators (e.g., a stop sign 420 and/or a traffic signal 418).
  • the vision sensors 156 may also detect the perpendicular street 408, as well as the corner 430, around which the vehicle must travel to make the right-hand turn 414 into the lane 412 of the perpendicular street 408. Radar 158 on the vehicle may be able to detect pedestrians, other cars, and/or objects in the road that the vision sensors 156 may not be able to detect. In the positions shown in FIG. 4 , the vision sensors 156 of the subject vehicle 404 may not be able to see the other vehicle 416. For example, a building, tree, or other objects may block the line of sight between the subject vehicle 404 and the other vehicle 416. Referring again to FIG.
  • the subject vehicle 404 and the other vehicle 416 may be equipped with a wireless communication system 160.
  • the subject vehicle 404 and the other vehicle 416 may communicate wirelessly about their current positions, intended routes of travel, etc.
  • the environmental threat module 148 can incorporate the map data and the data from the vision sensors 156, and/or the wireless communication data 160 to determine inputs to the steering wheel 104, the throttle pedal 106, and/or the brake pedal 108 of the subject vehicle 404 to safely steer the vehicle from the lane 410 of the first road 406 into the lane 412 of the perpendicular road 408.
  • the environmental threat module 148 can determine a safe distance from the intersection 402 at which to begin slowing the vehicle.
  • the environmental threat module 148 can provide the braking information to the processor 142, which can in turn send control signals to the speed controller 124 that actuate the brake actuator to slow the vehicle in block 212.
  • the processor 142 and speed controller 124 can send command signals to the feedback motor 114 of the brake pedal 108 to provide an indication of the actuation of the brake actuator 132 to the operator. If the intersection 402 is controlled by a stop sign 420, then the processor 142 can send signals to bring the vehicle to a complete stop.
  • the processor 142 can bring the vehicle to a complete stop.
  • the processor can monitor for operator-provided inceptor inputs. For example, the operator may actuate the brake pedal 108 more aggressively than the processor 142 (e.g., to stop short of the intersection).
  • the processor 142 can check to determine whether the operation of the brake pedal 108 is within a safe range of operation. For example, the environmental threat module 148 can determine a minimum actuation (a minimum value of the safe range of operation) of the brake actuator 132 that results in the vehicle stopping before entering the intersection.
  • the environmental threat module 148 can also determine a maximum actuation (a first maximum value of the safe range of operation) of the brake actuator 132 (e.g., to avoid a sudden stop if a vehicle is closely following the subject vehicle 404).
  • the vehicle dynamics module 146 can also determine a maximum actuation (a second maximum value of the safe range of operation) of the brake actuator 132.
  • the vehicle dynamics module can calculate a maximum actuation of the brake actuator 132 before the wheels lock and the tires skid on the road.
  • values for range limits calculated by the environmental threat module 148 and the vehicle dynamics module 146 may differ.
  • the environmental threat module may set a very high maximum brake actuation of the brake actuator 132 if no other vehicles are detected behind the subject vehicle 404.
  • the vehicle dynamics module 146 may set a much lower maximum brake actuation of the brake actuator 132 to avoid a skid.
  • the processor 142 can select the more conservative limit on the safe range of operation (e.g., select the maximum brake actuation from the vehicle dynamics module 146). If the operator's operation of the brake pedal is not within the safe range, then the processor returns to block 212 and continues to command the subject vehicle 404 autonomously.
  • the autonomous commands to the subject vehicle 404 to comply with the operator's inceptor inputs as closely as possible within the determined safe limits.
  • the autonomous braking command can be modified to increase actuation of the brake actuator 132 to the limits beyond which a skid may occur.
  • the processor 142 replaces its autonomous commands with the operator-provided inputs to stop the vehicle short of the intersection. After the operator releases the brake pedal 108, the vehicle can proceed to the intersection 402 (e.g., by autonomously actuating the throttle actuator 134).
  • the environmental threat module 148 can determine a safe range of actuation by the steering actuator 136 that will steer the vehicle around the corner 430 of the intersection 402 and into the land 412 of the perpendicular road 408.
  • the processor 142 can receive the safe range from the environmental thread module 148 and can send commands to the steering controller 122 that cause the steering actuator 136 to actuate within the safe range and steer the vehicle to the right and into lane 412 of the perpendicular road 408.
  • the processor 142 and the steering controller 122 can send command signals to the feedback motor 110 of the steering wheel 104 to provide an indication of the actuation of the steering actuator 136.
  • the other vehicle 416 As the subject vehicle 404 approaches the intersection 402, the other vehicle 416, which is also approaching the intersection 402, may be detected.
  • the environmental threat module 148 may determine (or assume) that the other vehicle 416 is not going to stop short of the intersection 402. As a result, the environmental threat module 148 can determine actuations to the brake pedal 108 to stop the subject vehicle 404 short of the intersection 402 to avoid a possible collision with the other vehicle 416. Compared to the above example, the environmental threat module may determine a higher maximum actuation of the brake actuator 132 for the determined safe range.
  • the processor 142 can then send command signals to the speed controller 124 that can command actuation of the brake actuator within the determined safe range.
  • the environmental threat module 148 can determine that the other vehicle 416 is no longer a threat. Accordingly, the environmental threat module 148 can send a revised range of safe commands to the processor 142 that includes actuation of the throttle pedal 134 so that the subject vehicle 404 can move through the intersection 402.
  • the operator of the subject vehicle 404 can be steering the subject vehicle 404 toward the intersection 402.
  • the processor 142 can monitor operation of the steering controller 122 and the speed controller 124 to ensure that the drivers inputs to the steering wheel 104 are within a safe range of operation (as determined by the environmental threat module 148) to maintain the subject vehicle 404 between the center lane marker 422 and the edge marker 424.
  • the processor 142 can monitor the operator's operation of the throttle pedal 106 and the brake pedal 108 to make sure that the subject vehicle 404 is slowing down to a safe speed as vehicle 404 approaches the intersection 402.
  • the environmental threat module 148 can determine a safe range of actuation of the brake actuator 132 to safely stop the subject vehicle 404 short of the intersection 402.
  • the processor can replace and/or modify the operator's control signals with control signals that result in actuation of the brake actuator 132 within the determined safe range.
  • the processor 142 can determine that the operator's inceptor inputs are not within the predetermined safe range of operation of the brake actuator 132 (discussed above) and can send command signals to the speed controller 124 to slow the vehicle by actuating the brake actuator within the safe range.
  • FIGS. 5A and 5B illustrate two variations of a scenario in which a subject vehicle 502 is driving on a limited-access highway 500 in a right-hand lane 506.
  • the subject vehicle 502 is approaching a merge location 512 and another vehicle 504 is driving along an on-ramp lane 510 toward the merge location 512.
  • vision sensors 156 of the subject vehicle 502 may detect the center lane line 516 and the edge lines 518 and 520 of the highway 500.
  • the vision sensors 156 may also detect that the adjacent lane 508 is vacant proximate to the subject vehicle 502.
  • the vision sensors 156 may also detect the merge location 512, and the other vehicle 504 driving along the on-ramp 510 toward the merge location 512.
  • the environmental threat module 148 can determine a safe range of operation of the brake actuator 132, throttle actuator 134, and steering actuator 136 for the vehicle. For example, as discussed above, the environmental threat module 148 can determine a safe range of actuations of the steering actuator 136 that maintain the subject vehicle 502 in the lane 506 between the center lane marker 516 and the edge marker 520.
  • the environmental threat module 148 can also determine a safe range of actuations of the throttle actuator 134 that maintain the subject vehicle 502 within a range of the posted speed limit for the highway 500.
  • the processor 142 can send command signals to the steering controller 122 and speed controller within the determined safe ranges.
  • the environmental threat module 148 can detect the merging vehicle 504 in the on-ramp lane 510. In the event the environmental threat module 148 determines that the subject vehicle 502 and the merging vehicle 504 are on a collision course at the merge location 512, the environmental threat module 148 can determine a new safe range of actuations of the brake actuator 132, throttle actuator 134, and steering actuator 136 that avoid the collision. For example, the environmental threat module 148 can provide a safe range of actuations that result in the subject vehicle 502 moving to the adjacent lane 508, speeding up, and/or slowing down.
  • the environmental threat module 148 may prioritize the options and/or choose a combination of options. For example, reducing speed may be prioritized over increasing speed if the subject vehicle 502 is traveling at the posted speed limit. Additionally, a combination of changing to the adjacent lane 508 and slowing down may be prioritized higher than only slowing down because the combined action may provide the greatest separation between the subject vehicle 502 and the merging vehicle 504.
  • the processor can detect whether the vehicle operator attempts to provide an inceptor input (through the steering wheel 104, throttle pedal 106, and/or the brake pedal 108) that differs from commands being sent from the processor 142 to the steering controller 122 and the speed controller 124.
  • the environmental threat module 148 may determine that a safe range of actuations include actuating the steering actuator 136 to move the vehicle to the adjacent lane 508 and actuations of the throttle actuator 134 or the brake actuator 132 to speed up or slow down, respectively.
  • the processor 142 can determine that the operator's inceptor inputs differ from its autonomous command signals.
  • the processor 142 can determine whether the operator's command inputs are safe. As discussed above, in this example, the environmental threat module 148 has included a safe range of actuations of the throttle actuator 134 if the vehicle can safely accelerate.
  • the processor 142 can replace and/or modify its autonomous commands with the operator's commands.
  • the processor 142 can replace its autonomous commands by terminating the above-described commands to the steering controller 122 and the speed controller 124 to change lanes and slow down, respectively.
  • the processor 142 can allow the operator's inceptor inputs to the throttle pedal 106 to be communicated to the speed controller 124 and the throttle actuator 134.
  • the processor 142 can modify its autonomous commands by only ceasing its autonomous commands to the speed controller 124 to slow down. As a result, the processor 142 will autonomously command the steering controller 122 so that the subject vehicle 502 changes lanes and the operator controls the speed controller 124 so that the subject vehicle 502 increases speed.
  • a third vehicle 514 may be in the adjacent lane 508, thereby preventing the subject vehicle 502 from changing lanes.
  • the environmental threat module 148 would eliminate from the safe ranges of actuation any actuation of the steering actuator 136 that causes the subject vehicle 502 to change lanes. Instead, the environmental threat module 148 may determine safe ranges of actuation of the brake actuator 132 or the throttle actuator 134 to slow down or speed up, respectively, to avoid a collision with the merging vehicle 504.
  • the processor 142 in turn, can send command signals to the speed controller 124 to reduce or increase vehicle speed to avoid a collision with the other vehicle 504 on the on-ramp 510, heading toward the merge location 512.
  • the processor 142 can determine that the inceptor input is not in the safe range (because of the third vehicle 514). The processor 142 can send command signals to the feedback motor 110 of the steering wheel 104 to indicate to the operator that the inceptor input is being rejected. After determining that the operator's inceptor inputs are unsafe, the processor 142 can continue to issue its autonomous command to the speed controller 124 to slow down (block 212).
  • the processor 142 can monitor an operator's operation of the control inceptors 102 of the subject vehicle 502 (block 202). For example, as discussed above, the processor 142 can monitor operation of the vehicle to ensure that it stays within the lane 506. In the event the driver fails to correct for the subject vehicle 502 drifting out of the lane 506 (block 204), the processor 142 can send command signals to the steering controller 122 that correct such drift (block 208). As the subject vehicle 502 approaches the merge location 512, as discussed above, the environmental threat module 148 can detect the merging vehicle 504 and the impending collision.
  • the environmental threat module 148 can send to the processor 142 a safe range of actuations of the brake actuator 132, throttle actuator 134, and/or steering actuator 136 that would avoid the collision.
  • the processor 142 can monitor operation of the steering wheel 104, the throttle pedal 106, and the brake pedal 108 (block 202) to determine whether the operator provides control signals that result in actuation of the actuators within the determined safe range of actuations (block 204). For example, if the operator of the subject vehicle 502 moves the subject vehicle 502 into the adjacent lane 508, then the processor 142 may take no action (block 206). Similarly, if the vehicle operator slows down or speeds up, then the processor 142 may take no action (block 206).
  • the processor 142 can send command signals consistent with the environmental threat module 148 to move the vehicle to the adjacent lane 508, slow down, and/or speed up to avoid the collision.
  • the processor 142 can override the operator's command signals to the steering controller to maintain the subject vehicle 502 in the original lane 506.
  • the processor 142 can send command signals to the feedback motor 110 of the steering wheel 104 (via the steering controller) to indicate to the operator that the lane change is not being allowed.
  • a display screen can provide textual and/or graphical information about operation of the vehicle automation module 140 to the operator.
  • the display screen can provide an image of the environment surrounding a vehicle and highlight objects in the environment that the environmental thread module 148 has identified.
  • the display screen can also provide information about instances when the vehicle automation module 140 overrides the operator.
  • a text-based message can be provided to explain why an operator-provided inceptor input is not implemented.
  • a graphical message e.g., an image of an object the car may collide with under the operator's inceptor inputs
  • the various embodiments described herein may be a system, a method, and/or a computer program product.
  • the computer program product may include a computer-readable storage medium (or media) having computer-readable program instructions thereon for causing a processor to carry out aspects of the present invention.
  • the computer-readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device.
  • the computer-readable storage medium may be, for example, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
  • a non-exhaustive list of more specific examples of the computer-readable storage medium includes the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, and any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • SRAM static random access memory
  • CD-ROM compact disc read-only memory
  • DVD digital versatile disk
  • a memory stick any suitable combination of the foregoing.
  • a computer-readable storage medium is not to be construed as being transitory signals per se , such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission media (e.g., light pulses passing through a fiber-optic cable), or electrical signals transmitted through a wire.
  • Computer-readable program instructions described herein can be downloaded to respective computing/processing devices from a computer-readable storage medium or to an external computer or external storage device via a network, for example, the Internet, a local area network, a wide area network and/or a wireless network.
  • the network may comprise copper transmission cables, optical transmission fibers, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers.
  • a network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium within the respective computing/processing device.
  • Computer-readable program instructions for carrying out operations of the present invention may be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages.
  • the computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).
  • electronic circuitry including, for example, programmable logic circuitry, field-programmable gate arrays (FPGA), or programmable logic arrays (PLA) may execute the computer-readable program instructions by utilizing state information of the computer-readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present invention.
  • These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram block or blocks.
  • the computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable apparatus, or other device implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s).
  • the functions noted in the block may occur out of the order noted in the figures.
  • two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

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EP15165349.0A 2014-05-30 2015-04-28 Véhicule terrestre commandé de manière variable Withdrawn EP2974932A1 (fr)

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US20150346724A1 (en) 2015-12-03
US20190152475A1 (en) 2019-05-23

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